PrivaZer is definitely the best of the best, you really can't go wrong with this one. This one definitely makes all other cleaners look bad, because it does so much more than all of them, and definitely brings huge performance gains after doing a cleaning. Still, easy interface, nice options, free, so far so good. I would run this every week or depending on pc use but leave every day sweeping to others, especially since it says clean up can be 1 to 2 hours! It is a handy free but more powerful cleaner with a decent amount of options. It is a bit time consuming which hinders it a bit but again, very thorough. But this as with others, I would strongly caution what you clean and read up before you accidentally rid yourself of something you didn't want to let go. That said, PrivaZer is definitely an in depth cleaner compared to some and seems to do a good job. Ccleaner is thorough enough and has been safe to use for both junk and registry and has proven so for years now but no, it's not as thorough and I feel Ccleaner would defeat the purpose if it became such. One, I won't rate this against Ccleaner, Ccleaner is not THIS cleaner. I have reported this to Privazer several times over the years, have never received a reply, and find that the problem still exists in the latest (3.0) version. To fix the problem I copy all files elsewhere, reformat the virtual drive, then copy all files back. Yet the total size of all files and folders on the drives is still as before - well under 100 megabytes, as shown by Windows Explorer.

Eventually it reaches the point where Privazer says there is insufficient space to clean the MFT table. Yet, as I use Privazer on this drive, I observe that over time the free space keeps dropping. The info in the files changes, but the overall size of them varies very little. Large amounts of data are temporarily added and then removed. This drive contains only a few data files. I have a virtual drive, which when mounted is 768 megabytes.

Every time Privazer is run on a drive, some free space disappears and is unrecoverable.

Privazer vs slimcleaner